Table 2.

Area under the curve (AUC) for the prediction of spontaneous passage of a ureteral stone with different measurements — Subgrouped according to position in the ureter

Measures	Upper stones						Lower stones
	4 weeks			20 weeks			4 weeks			20 weeks
	AUC	95% CI		AUC	95% CI		AUC	95% CI		AUC	95% CI
		Lower	Upper		Lower	Upper		Lower	Upper		Lower	Upper
Length (aut)	0.89	0.81	0.97	0.89	0.83	0.95	0.80	0.70	0.89	0.81	0.71	0.92
Width (aut)	0.89	0.82	0.97	0.90	0.85	0.95	0.80	0.71	0.88	0.80	0.70	0.89
Area (aut)	0.87	0.78	0.96	0.91	0.87	0.96	0.75	0.65	0.86	0.80	0.72	0.89
Circumference (aut)	0.88	0.80	0.97	0.91	0.86	0.96	0.78	0.68	0.87	0.81	0.72	0.89
Volume (aut)	0.90	0.82	0.97	0.91	0.87	0.96	0.78	0.69	0.88	0.82	0.73	0.91
Surface (aut)	0.90	0.82	0.97	0.91	0.86	0.96	0.79	0.70	0.89	0.82	0.73	0.91
Length (manual)	0.89	0.81	0.97	0.89	0.83	0.95	0.79	0.69	0.88	0.83	0.73	0.92
Width (manual)	0.92	0.85	0.99	0.93	0.89	0.97	0.80	0.71	0.89	0.83	0.73	0.93

Length = Longest stone axis, width = largest diameter perpendicular to the long axis, area = cross-sectional area perpendicular to the long axis, circumference = circumference perpendicular to the long axis, volume = stone volume, surface = total surface area

(aut) = Automated 3D segmentation based measurement. (manual) = Mean of three readers manual estimations of stone size